Method test_raise_on_cycle_two

test/base/test_dependency.py:138–169

(self)

            )

    def test_raise_on_cycle_two(self):
        # this condition was arising from ticket:362 and was not treated
        # properly by topological sort

        node1 = "node1"
        node2 = "node2"
        node3 = "node3"
        node4 = "node4"
        tuples = [
            (node1, node2),
            (node3, node1),
            (node2, node4),
            (node3, node2),
            (node2, node3),
        ]
        allitems = self._nodes_from_tuples(tuples)

        try:
            list(topological.sort(tuples, allitems))
            assert False
        except exc.CircularDependencyError as err:
            eq_(err.cycles, {"node1", "node3", "node2"})
            eq_(
                err.edges,
                {
                    ("node3", "node1"),
                    ("node2", "node3"),
                    ("node3", "node2"),
                    ("node1", "node2"),
                    ("node2", "node4"),
                },
            )

    def test_raise_on_cycle_three(self):
        question, issue, providerservice, answer, provider = (